Finding the Third Proportional to 11,931 and 28,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931 : 28,081.50 = 28,081.50 : x
2. Step 2: Convert to fraction form
   11,931/28,081.50 = 28,081.50/x
3. Step 3: Cross multiply
   11,931x = 28,081.50 × 28,081.50
4. Step 4: Simplify right side
   11,931x = 788,570,642.25
5. Step 5: Solve for x
   x = 788,570,642.25/11,931
6. Step 6: Final answer
   x = 66,094.26